We are using AD5734AREZ in our design and it seems that there are some problem with the output range. In the firmware, I configure it as +10.8 V output, however some times the output will be 5V once I power on the board. It does not happen very often, maybe 5~10% of chance, but it has to be resolved.
We have tried quite a few things, but none worked. I can even read back the output range selection register and it says 2 which should be 10.8V, but the actual output is 5V.
I am attaching the schematic here and can someone give me some suggestion?